Dynamics of Sows' Activity Housed in Farrowing Pens with Possibility of Temporary Crating might Indicate the Time when Sows Should Be Confined in A Crate before the Onset of Farrowing.

A decreasing trend in the number of “first-stage” alarms generated earlier than 48 h before the onset of farrowing meant that as confidence interval bounds increased, alarms were generated nearer to the onset of farrowing.

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